Question

what term describes this particle model?

strong acid
weak acid
strong base
weak base

Explanation:

Analyze the key components of the particle model

The diagram shows a solution containing two types of particles:

• Small orange circles labeled as \(\text{H}^+\) ions.
• Larger black circles labeled as \(\text{X}^-\) ions.

Determine the degree of dissociation

In the beaker, we observe that all the acid molecules have dissociated completely into individual \(\text{H}^+\) and \(\text{X}^-\) ions. There are no intact, undissociated \(\text{HX}\) molecules (which would be represented by an orange circle attached directly to a black circle) present in the solution.

Classify the substance

A substance that releases \(\text{H}^+\) ions in solution is an acid. Because the model shows complete dissociation (100% of the particles exist as separate ions), it represents a strong acid.

Answer:

• strong acid (Correct answer)
• weak acid
• strong base
• weak base